Backlight and RGB now working for JJ50 (#2929)
* Added support for JJ50 from KPRepublic, no rgb or backlight control yet. Added as a layout of ymd96 at the moment (same microprocessor). Basic keymap with three layers to get started. * Added support for JJ50 * Tidied up jj50 code, backlight and RGB is now working. * Renaming "KEYMAP" to "LAYOUT" to adhere to the new QMK standards.pull/2935/head
WarmCat
7 years ago
committed by
Drashna Jaelre
parent
c5264d6d89
commit
933842067d
@ -0,0 +1,212 @@
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/**
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* Backlighting code for PS2AVRGB boards (ATMEGA32A)
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* Kenneth A. (github.com/krusli | krusli.me)
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*/
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#include "backlight.h"
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#include "quantum.h"
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#include <avr/pgmspace.h>
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#include <avr/interrupt.h>
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#include "backlight_custom.h"
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#include "breathing_custom.h"
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// DEBUG
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#include <stdlib.h>
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#include <stdio.h>
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// Port D: digital pins of the AVR chipset
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#define NUMLOCK_PORT (1 << 1) // 1st pin of Port D (digital)
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#define CAPSLOCK_PORT (1 << 2) // 2nd pin
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#define BACKLIGHT_PORT (1 << 4) // 4th pin
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#define SCROLLLOCK_PORT (1 << 6) // 6th pin
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#define TIMER_CLK_DIV64 0x03 ///< Timer clocked at F_CPU/64
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#define TIMER1PRESCALE TIMER_CLK_DIV64 ///< timer 1 prescaler default
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#define TIMER_PRESCALE_MASK 0x07 ///< Timer Prescaler Bit-Mask
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#define PWM_MAX 0xFF
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#define TIMER_TOP 255 // 8 bit PWM
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extern backlight_config_t backlight_config;
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/**
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* References
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* Port Registers: https://www.arduino.cc/en/Reference/PortManipulation
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* TCCR1A: https://electronics.stackexchange.com/questions/92350/what-is-the-difference-between-tccr1a-and-tccr1b
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* Timers: http://www.avrbeginners.net/architecture/timers/timers.html
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* 16-bit timer setup: http://sculland.com/ATmega168/Interrupts-And-Timers/16-Bit-Timer-Setup/
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* PS2AVRGB firmware: https://github.com/showjean/ps2avrU/tree/master/firmware
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*/
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// @Override
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// turn LEDs on and off depending on USB caps/num/scroll lock states.
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void led_set_user(uint8_t usb_led) {
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if (usb_led & (1 << USB_LED_NUM_LOCK)) {
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// turn on
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DDRD |= NUMLOCK_PORT;
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PORTD |= NUMLOCK_PORT;
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} else {
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// turn off
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DDRD &= ~NUMLOCK_PORT;
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PORTD &= ~NUMLOCK_PORT;
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}
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if (usb_led & (1 << USB_LED_CAPS_LOCK)) {
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DDRD |= CAPSLOCK_PORT;
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PORTD |= CAPSLOCK_PORT;
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} else {
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DDRD &= ~CAPSLOCK_PORT;
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PORTD &= ~CAPSLOCK_PORT;
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}
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if (usb_led & (1 << USB_LED_SCROLL_LOCK)) {
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DDRD |= SCROLLLOCK_PORT;
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PORTD |= SCROLLLOCK_PORT;
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} else {
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DDRD &= ~SCROLLLOCK_PORT;
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PORTD &= ~SCROLLLOCK_PORT;
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}
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}
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#ifdef BACKLIGHT_ENABLE
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// sets up Timer 1 for 8-bit PWM
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void timer1PWMSetup(void) { // NOTE ONLY CALL THIS ONCE
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// default 8 bit mode
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TCCR1A &= ~(1 << 1); // cbi(TCCR1A,PWM11); <- set PWM11 bit to HIGH
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TCCR1A |= (1 << 0); // sbi(TCCR1A,PWM10); <- set PWM10 bit to LOW
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// clear output compare value A
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// outb(OCR1AH, 0);
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// outb(OCR1AL, 0);
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// clear output comparator registers for B
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OCR1BH = 0; // outb(OCR1BH, 0);
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OCR1BL = 0; // outb(OCR1BL, 0);
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}
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bool is_init = false;
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void timer1Init(void) {
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// timer1SetPrescaler(TIMER1PRESCALE)
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// set to DIV/64
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(TCCR1B) = ((TCCR1B) & ~TIMER_PRESCALE_MASK) | TIMER1PRESCALE;
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// reset TCNT1
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TCNT1H = 0; // outb(TCNT1H, 0);
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TCNT1L = 0; // outb(TCNT1L, 0);
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// TOIE1: Timer Overflow Interrupt Enable (Timer 1);
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TIMSK |= _BV(TOIE1); // sbi(TIMSK, TOIE1);
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is_init = true;
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}
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void timer1UnInit(void) {
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// set prescaler back to NONE
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(TCCR1B) = ((TCCR1B) & ~TIMER_PRESCALE_MASK) | 0x00; // TIMERRTC_CLK_STOP
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// disable timer overflow interrupt
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TIMSK &= ~_BV(TOIE1); // overflow bit?
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setPWM(0);
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is_init = false;
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}
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// handle TCNT1 overflow
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//! Interrupt handler for tcnt1 overflow interrupt
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ISR(TIMER1_OVF_vect, ISR_NOBLOCK)
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{
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// sei();
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// handle breathing here
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#ifdef BACKLIGHT_BREATHING
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if (is_breathing()) {
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custom_breathing_handler();
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}
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#endif
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// TODO call user defined function
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}
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// enable timer 1 PWM
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// timer1PWMBOn()
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void timer1PWMBEnable(void) {
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// turn on channel B (OC1B) PWM output
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// set OC1B as non-inverted PWM
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TCCR1A |= _BV(COM1B1);
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TCCR1A &= ~_BV(COM1B0);
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}
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// disable timer 1 PWM
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// timer1PWMBOff()
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void timer1PWMBDisable(void) {
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TCCR1A &= ~_BV(COM1B1);
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TCCR1A &= ~_BV(COM1B0);
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}
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void enableBacklight(void) {
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DDRD |= BACKLIGHT_PORT; // set digital pin 4 as output
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PORTD |= BACKLIGHT_PORT; // set digital pin 4 to high
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}
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void disableBacklight(void) {
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// DDRD &= ~BACKLIGHT_PORT; // set digital pin 4 as input
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PORTD &= ~BACKLIGHT_PORT; // set digital pin 4 to low
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}
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void startPWM(void) {
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timer1Init();
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timer1PWMBEnable();
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enableBacklight();
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}
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void stopPWM(void) {
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timer1UnInit();
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disableBacklight();
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timer1PWMBDisable();
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}
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void b_led_init_ports(void) {
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/* turn backlight on/off depending on user preference */
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#if BACKLIGHT_ON_STATE == 0
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// DDRx register: sets the direction of Port D
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// DDRD &= ~BACKLIGHT_PORT; // set digital pin 4 as input
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PORTD &= ~BACKLIGHT_PORT; // set digital pin 4 to low
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#else
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DDRD |= BACKLIGHT_PORT; // set digital pin 4 as output
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PORTD |= BACKLIGHT_PORT; // set digital pin 4 to high
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#endif
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timer1PWMSetup();
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startPWM();
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#ifdef BACKLIGHT_BREATHING
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breathing_enable();
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#endif
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}
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void b_led_set(uint8_t level) {
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if (level > BACKLIGHT_LEVELS) {
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level = BACKLIGHT_LEVELS;
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}
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setPWM((int)(TIMER_TOP * (float) level / BACKLIGHT_LEVELS));
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}
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// called every matrix scan
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void b_led_task(void) {
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// do nothing for now
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}
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void setPWM(uint16_t xValue) {
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if (xValue > TIMER_TOP) {
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xValue = TIMER_TOP;
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}
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OCR1B = xValue; // timer1PWMBSet(xValue);
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}
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#endif // BACKLIGHT_ENABLE
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@ -0,0 +1,15 @@
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/**
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* Backlighting code for PS2AVRGB boards (ATMEGA32A)
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* Kenneth A. (github.com/krusli | krusli.me)
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*/
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#ifndef BACKLIGHT_CUSTOM_H
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#define BACKLIGHT_CUSTOM_H
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#include <avr/pgmspace.h>
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void b_led_init_ports(void);
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void b_led_set(uint8_t level);
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void b_led_task(void);
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void setPWM(uint16_t xValue);
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#endif // BACKLIGHT_CUSTOM_H
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@ -0,0 +1,140 @@
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/**
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* Breathing effect code for PS2AVRGB boards (ATMEGA32A)
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* Works in conjunction with `backlight.c`.
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*
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* Code adapted from `quantum.c` to register with the existing TIMER1 overflow
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* handler in `backlight.c` instead of setting up its own timer.
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* Kenneth A. (github.com/krusli | krusli.me)
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*/
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#ifdef BACKLIGHT_ENABLE
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#ifdef BACKLIGHT_BREATHING
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#include "backlight_custom.h"
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#ifndef BREATHING_PERIOD
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#define BREATHING_PERIOD 6
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#endif
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#define breathing_min() do {breathing_counter = 0;} while (0)
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#define breathing_max() do {breathing_counter = breathing_period * 244 / 2;} while (0)
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// TODO make this share code with quantum.c
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#define BREATHING_NO_HALT 0
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#define BREATHING_HALT_OFF 1
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#define BREATHING_HALT_ON 2
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#define BREATHING_STEPS 128
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static uint8_t breathing_period = BREATHING_PERIOD;
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static uint8_t breathing_halt = BREATHING_NO_HALT;
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static uint16_t breathing_counter = 0;
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static bool breathing = false;
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bool is_breathing(void) {
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return breathing;
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}
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// See http://jared.geek.nz/2013/feb/linear-led-pwm
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static uint16_t cie_lightness(uint16_t v) {
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if (v <= 5243) // if below 8% of max
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return v / 9; // same as dividing by 900%
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else {
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uint32_t y = (((uint32_t) v + 10486) << 8) / (10486 + 0xFFFFUL); // add 16% of max and compare
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// to get a useful result with integer division, we shift left in the expression above
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// and revert what we've done again after squaring.
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y = y * y * y >> 8;
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if (y > 0xFFFFUL) // prevent overflow
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return 0xFFFFU;
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else
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return (uint16_t) y;
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}
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}
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void breathing_enable(void) {
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breathing = true;
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breathing_counter = 0;
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breathing_halt = BREATHING_NO_HALT;
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// interrupt already registered
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}
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void breathing_pulse(void) {
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if (get_backlight_level() == 0)
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breathing_min();
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else
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breathing_max();
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breathing_halt = BREATHING_HALT_ON;
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// breathing_interrupt_enable();
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breathing = true;
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}
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void breathing_disable(void) {
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breathing = false;
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// backlight_set(get_backlight_level());
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b_led_set(get_backlight_level()); // custom implementation of backlight_set()
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}
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void breathing_self_disable(void)
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{
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if (get_backlight_level() == 0)
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breathing_halt = BREATHING_HALT_OFF;
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else
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breathing_halt = BREATHING_HALT_ON;
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}
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void breathing_toggle(void) {
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if (is_breathing())
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breathing_disable();
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else
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breathing_enable();
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}
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void breathing_period_set(uint8_t value)
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{
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if (!value)
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value = 1;
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breathing_period = value;
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}
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void breathing_period_default(void) {
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breathing_period_set(BREATHING_PERIOD);
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}
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void breathing_period_inc(void)
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{
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breathing_period_set(breathing_period+1);
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}
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void breathing_period_dec(void)
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{
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breathing_period_set(breathing_period-1);
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}
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/* To generate breathing curve in python:
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* from math import sin, pi; [int(sin(x/128.0*pi)**4*255) for x in range(128)]
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*/
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static const uint8_t breathing_table[BREATHING_STEPS] PROGMEM = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 28, 32, 36, 41, 46, 51, 57, 63, 70, 76, 83, 91, 98, 106, 113, 121, 129, 138, 146, 154, 162, 170, 178, 185, 193, 200, 207, 213, 220, 225, 231, 235, 240, 244, 247, 250, 252, 253, 254, 255, 254, 253, 252, 250, 247, 244, 240, 235, 231, 225, 220, 213, 207, 200, 193, 185, 178, 170, 162, 154, 146, 138, 129, 121, 113, 106, 98, 91, 83, 76, 70, 63, 57, 51, 46, 41, 36, 32, 28, 24, 20, 17, 15, 12, 10, 8, 6, 5, 4, 3, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
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// Use this before the cie_lightness function.
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static inline uint16_t scale_backlight(uint16_t v) {
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return v / BACKLIGHT_LEVELS * get_backlight_level();
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}
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void custom_breathing_handler(void) {
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uint16_t interval = (uint16_t) breathing_period * 244 / BREATHING_STEPS;
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// resetting after one period to prevent ugly reset at overflow.
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breathing_counter = (breathing_counter + 1) % (breathing_period * 244);
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uint8_t index = breathing_counter / interval % BREATHING_STEPS;
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if (((breathing_halt == BREATHING_HALT_ON) && (index == BREATHING_STEPS / 2)) ||
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((breathing_halt == BREATHING_HALT_OFF) && (index == BREATHING_STEPS - 1)))
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{
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// breathing_interrupt_disable();
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}
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setPWM(cie_lightness(scale_backlight((uint16_t) pgm_read_byte(&breathing_table[index]) * 0x0101U)));
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}
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#endif // BACKLIGHT_BREATHING
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#endif // BACKLIGHT_ENABLE
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